Affiliation: | 1. Graduate School of Engineering and Science, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903-0213, Japan;2. Department of EEE, Rajshahi University of Engineering and Technology, Bangladesh;3. Public Works Department (PWD), Bangladesh Government Service, Bangladesh;4. Research Institute of Photonics, Dalian Polytechnic University, Dalian, China |